Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 05-09-2021 and time 06:41:11 (Italy) in region 4 km W Valloriate (CN)

A magnitude ML 0.7 earthquake occured in region: 4 km W Valloriate (CN), on

  • 05-09-2021 04:41:11 (UTC)
  • 05-09-2021 06:41:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3510, 7.3260 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Valloriate CN 4 109 109
Demonte CN 4 2003 2112
Rittana CN 6 109 2221
Moiola CN 6 234 2455
Monterosso Grana CN 7 505 2960
Gaiola CN 7 582 3542
Valgrana CN 8 786 4328
Pradleves CN 8 250 4578
Aisone CN 9 248 4826
Roccasparvera CN 9 741 5567
Bernezzo CN 10 4104 9671
Valdieri CN 10 935 10606
Montemale di Cuneo CN 11 241 10847
Caraglio CN 11 6836 17683
Castelmagno CN 11 66 17749
Vignolo CN 12 2600 20349
Cervasca CN 12 5013 25362
Vinadio CN 13 644 26006
Roccavione CN 13 2761 28767
Borgo San Dalmazzo CN 13 12468 41235
Dronero CN 13 7035 48270
Entracque CN 14 774 49044
Roaschia CN 14 107 49151
Roccabruna CN 14 1585 50736
Cartignano CN 14 190 50926
Villar San Costanzo CN 15 1547 52473
Robilante CN 16 2306 54779
San Damiano Macra CN 16 430 55209
Boves CN 18 9835 65044
Cuneo CN 19 56081 121125
Celle di Macra CN 19 100 121225
Sambuco CN 20 92 121317

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km W of Cuneo (56081 inhabitants)
69 Km NW of Sanremo (54807 inhabitants)
78 Km SW of Moncalieri (57294 inhabitants)
85 Km SW of Torino (890529 inhabitants)
92 Km W of Savona (61345 inhabitants)
93 Km SW of Asti (76202 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 0.7 2021-09-05
04:41:11		 44.351 7.3263 9 2022-03-30
13:04:05		 Bollettino Sismico Italiano INGV 95375241
Reviewed
Rev100 		ML 0.7 2021-09-05
04:41:11		 44.3572 7.3258 10 2021-09-05
04:47:57		 Sala Sismica INGV-Roma 95056581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-05 04:41:11 ± 0.13
Latitude 44.3510 ± 0.0090
Longitude 7.3263 ± 0.0176
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95375241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1622
Semi-minor axis of confidence ellipse (meter) 315
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 238
Circular confidence region, given by single value of horizontal uncertainty (meter) 1620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.10612
Epicentral distance of station farthest from the epicenter (degree) 0.89033
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 95056581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-05 04:47:57

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 95375241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-23 22:49:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.PCP.HHN. 2021-09-05T04:41:41.42 0.6 undecidable manual S 77 98.8233 50 0.18 44
GU.RRL.HHE. 2021-09-05T04:41:35.02 0.6 undecidable manual S 326 76.0683 50 -0.16 46
GU.IMI.HHZ. 2021-09-05T04:41:32.44 0.3 undecidable manual S 137 66.4779 50 -0.18 70
GU.RORO.HHZ. 2021-09-05T04:41:31.83 0.6 undecidable manual S 114 64.491 50 -0.25 46
GU.PCP.HHN. 2021-09-05T04:41:29.95 0.3 undecidable manual P 77 98.8233 50 1.1 48
IV.MONC.HHN. 2021-09-05T04:41:29.11 0.6 undecidable manual P 30 93.1401 50 1.13 31
GU.BHB.HHZ. 2021-09-05T04:41:28.57 0.6 undecidable manual S 355 54.0015 50 -0.7 41
MN.BNI.HHN. 2021-09-05T04:41:28.79 0.6 undecidable manual P 327 93.0402 50 0.83 36
GU.MGRO.HNZ. 2021-09-05T04:41:28.31 0.3 undecidable manual S 132 51.4152 50 -0.26 71
GU.RSP.HNN. 2021-09-05T04:41:26.60 0.3 undecidable manual P 357 88.5447 50 -0.67 59
GU.RRL.HHE. 2021-09-05T04:41:26.03 0.3 undecidable manual P 326 76.0683 50 0.68 60
FR.SAOF.HHZ. 2021-09-05T04:41:26.15 0.3 undecidable manual S 156 44.3223 50 -0.54 67
GU.CANO.HHZ. 2021-09-05T04:41:25.48 0.3 undecidable manual P 102 74.0703 50 0.44 65
GU.GBOS.HHZ. 2021-09-05T04:41:25.25 0.3 undecidable manual S 106 42.5241 50 -0.97 56
GU.IMI.HHZ. 2021-09-05T04:41:24.98 0.6 undecidable manual P 137 66.4779 50 1.11 34
GU.BURY.HHZ. 2021-09-05T04:41:24.29 0.3 undecidable manual P 164 65.6898 50 0.55 64
GU.RORO.HHZ. 2021-09-05T04:41:23.65 0.3 undecidable manual P 114 64.491 50 0.09 72
GU.MGRO.HNZ. 2021-09-05T04:41:21.77 0.6 undecidable manual P 132 51.4152 50 0.23 48
GU.BHB.HHZ. 2021-09-05T04:41:21.61 0.3 undecidable manual P 355 54.0015 50 -0.33 70
GU.GBOS.HHZ. 2021-09-05T04:41:20.11 0.3 undecidable manual P 106 42.5241 50 -0.07 75
GU.PZZ.HHZ. 2021-09-05T04:41:20.31 0.3 undecidable manual S 316 23.9538 110 -0.5 71
FR.SAOF.HHZ. 2021-09-05T04:41:20.50 0.1 undecidable manual P 156 44.3223 50 0.05 100
GU.ENR.HHZ. 2021-09-05T04:41:17.71 0.3 undecidable manual S 152 15.3735 120 -0.37 74
GU.PZZ.HHZ. 2021-09-05T04:41:16.87 0.3 undecidable manual P 316 23.9538 110 -0.18 76
GU.STV.HHZ. 2021-09-05T04:41:16.83 0.3 undecidable manual S 180 11.7771 127 -0.21 77
GU.STV.HHZ. 2021-09-05T04:41:15.24 0.1 negative manual P 180 11.7771 127 0.36 99
GU.ENR.HHZ. 2021-09-05T04:41:15.53 0.3 undecidable manual P 152 15.3735 120 0.05 79
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHE. ML:0.8 0.0000687 1.7 AML other m 2021-09-05T04:41:17.01
GU.ENR.HHE. ML:0.9 0.00008195 0.24 AML other m 2021-09-05T04:41:17.81
GU.ENR.HHN. ML:0.9 0.00008675 0.26 AML other m 2021-09-05T04:41:17.86
GU.STV.HHN. ML:0.3 0.00002595 0.68 AML other m 2021-09-05T04:41:18.40
GU.PZZ.HHE. ML:0.8 0.000035000000000000004 1.08 AML other m 2021-09-05T04:41:21.19
GU.PZZ.HHN. ML:0.8 0.00003945 1.02 AML other m 2021-09-05T04:41:21.38
GU.GBOS.HHE. ML:0.5 0.00001 0.36 AML other m 2021-09-05T04:41:26.03
GU.GBOS.HHN. ML:0.5 0.000008225 1.28 AML other m 2021-09-05T04:41:27.64
GU.BHB.HHN. ML:0.8 0.0000164 0.38 AML other m 2021-09-05T04:41:29.71
GU.BHB.HHE. ML:0.9 0.000018849999999999997 0.08 AML other m 2021-09-05T04:41:29.74
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download